105 lines
2.8 KiB
C#
105 lines
2.8 KiB
C#
/*
|
|
* Copyright (c) 2018 ETH Zürich, Educational Development and Technology (LET)
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
using SafeExamBrowser.Contracts.Communication.Proxies;
|
|
using SafeExamBrowser.Contracts.Configuration;
|
|
using SafeExamBrowser.Contracts.Configuration.Settings;
|
|
using SafeExamBrowser.Contracts.Core.OperationModel;
|
|
using SafeExamBrowser.Contracts.I18n;
|
|
using SafeExamBrowser.Contracts.Logging;
|
|
using SafeExamBrowser.Contracts.UserInterface;
|
|
|
|
namespace SafeExamBrowser.Runtime.Operations
|
|
{
|
|
internal class ServiceOperation : IOperation
|
|
{
|
|
private bool connected, mandatory;
|
|
private IConfigurationRepository configuration;
|
|
private ILogger logger;
|
|
private IServiceProxy service;
|
|
|
|
public IProgressIndicator ProgressIndicator { private get; set; }
|
|
|
|
public ServiceOperation(IConfigurationRepository configuration, ILogger logger, IServiceProxy service)
|
|
{
|
|
this.configuration = configuration;
|
|
this.service = service;
|
|
this.logger = logger;
|
|
}
|
|
|
|
public OperationResult Perform()
|
|
{
|
|
logger.Info($"Initializing service session...");
|
|
ProgressIndicator?.UpdateText(TextKey.ProgressIndicator_InitializeServiceSession);
|
|
|
|
mandatory = configuration.CurrentSettings.ServicePolicy == ServicePolicy.Mandatory;
|
|
connected = service.Connect();
|
|
|
|
if (mandatory && !connected)
|
|
{
|
|
logger.Error("Aborting startup because the service is mandatory but not available!");
|
|
|
|
return OperationResult.Failed;
|
|
}
|
|
|
|
service.Ignore = !connected;
|
|
logger.Info($"The service is {(mandatory ? "mandatory" : "optional")} and {(connected ? "available." : "not available. All service-related operations will be ignored!")}");
|
|
|
|
if (connected)
|
|
{
|
|
StartServiceSession();
|
|
}
|
|
|
|
return OperationResult.Success;
|
|
}
|
|
|
|
public OperationResult Repeat()
|
|
{
|
|
// TODO: Re-check if mandatory, if so, try to connect (if not connected) - otherwise, no action required (except maybe logging of status?)
|
|
if (connected)
|
|
{
|
|
StopServiceSession();
|
|
StartServiceSession();
|
|
}
|
|
|
|
return OperationResult.Success;
|
|
}
|
|
|
|
public void Revert()
|
|
{
|
|
logger.Info("Finalizing service session...");
|
|
ProgressIndicator?.UpdateText(TextKey.ProgressIndicator_FinalizeServiceSession);
|
|
|
|
if (connected)
|
|
{
|
|
StopServiceSession();
|
|
|
|
var success = service.Disconnect();
|
|
|
|
if (success)
|
|
{
|
|
logger.Info("Successfully disconnected from the service.");
|
|
}
|
|
else
|
|
{
|
|
logger.Error("Failed to disconnect from the service!");
|
|
}
|
|
}
|
|
}
|
|
|
|
private void StartServiceSession()
|
|
{
|
|
service.StartSession(configuration.CurrentSession.Id, configuration.CurrentSettings);
|
|
}
|
|
|
|
private void StopServiceSession()
|
|
{
|
|
service.StopSession(configuration.CurrentSession.Id);
|
|
}
|
|
}
|
|
}
|